[GHC] #10716: Metadata in GHC.Generic should give access to strictness annotation

[GHC]

#10716: Metadata in GHC.Generic should give access to strictness annotation
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        Reporter:  StefanWehr        |                   Owner:
            Type:  feature request   |                  Status:  new
        Priority:  normal            |               Milestone:
       Component:  Compiler          |                 Version:  7.10.2
      Resolution:                    |                Keywords:
Operating System:  Unknown/Multiple  |            Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |               Test Case:
      Blocked By:                    |                Blocking:
 Related Tickets:                    |  Differential Revisions:
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Comment (by dreixel):

 Why can't we just add the `selIsStrict` part?

 To get the information at the type level we better do it for all meta-data
 at the same time, and we can get it when we make `GHC.Generics` use
 `DataKinds`, as described in
 https://ghc.haskell.org/trac/ghc/wiki/Commentary/Compiler/GenericDeriving#Kindpolymorphicoverhaul

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10716#comment:3>
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